#include<iostream>

using namespace std;

int main(int argc, char **argv)
{
	int N = 100;
	int sum = 0;
	int i =1;
	
	while(i<=N)
	{
		sum += i;
		i += 1;
	}
	cout<<"sum = "<<sum<<endl;
	cout<<"The program is over."<<endl;
	return 0;
}
